Typewriter movement



Amm 'i 9 1926 O. TYBERG TYPEWRITER MOVEMENT 3 Sheets-Shes?l 1 INVENTORAug. 3i l926 Lg v o. TYBERG TYPEWRITER MOVEMENT` Filed may 29, 192'; ssheets-sheet 2 Figi.

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OLUF TYBERG, F POINT LOMA, SAN DIEGO, CALIFORNIA.

TYPEWRI'IER MOVEMENT.

Application filed May 29,

'lhe object of this invention is to produce a series of new mechanicalmovements by means of which it shall be possible efciently to controlthe printing action of a type-carrier, which by the aid of someauxiliary power is normally in' a continuous state of motion, and thusto construct a typewriter or similar device capable of being operatedVith certainty, ease and speed.

TWith this and other objects inyiew the invention consists in certainconstructions, improvements and combinations as will hereafter be fullydescribed and then specifically pointed out in the claims hereuntoappended.

is this invention is capable of a great variety of modifications, thetypewriter here shown is one selected for the particular purpose ofclearly illustrating the concrete embodiment of the invention, fromwhich many features, otherwise essential to complete machine of thisnature but unrelated to the subject matter of this invention, have beeneliminated.

ln the accompanying drawings, consisting of three sheets, Fig. 1 is afrontelevation of a typewriter embodying my invention. Fig. 2 is asectional side elevation of the same on rm-a of F ig. 1 showing theworking in their normal position. F ig. 3 is a part of a similar sectionas Fig. 2 showing working parts in active operation. 'Fig'. l is asectional top view of Fig, 3 on the lines 7 7. Fig. 5 is a part of a topview, similar to F ff ll., showing the working parts in posit. espondingto those in Fig. 2, Figs. are end and side views of the armed l and Fig.8 is a sectional top view of the rotating carrier on the lines c-c ofv1. f) D in'. L

2, mounted on top of it. Over q casing 2 is a plate 4l. Upon the iop oiplate -l is mounted another casing covered by another plate 6. All ofsaid Ls are properly fitted and screwed toie rotary carrier Figs. 2 andmaybe :nctediii any suitable manner; and 1s shown in the shape of ahollow cylinder 13,

1922. serial No. 564,644.

supported on a shaft 11 and mounted in the bearing 12. The bearing 12 isa hub formed in the center of thel pawl case 40, to be describedhereafter. The upper portion of the hollow cylinder 13 has a cover 14,provided with a. tubular projection 15, fitted to turn in the upperplate 6, and acts as the upper sup-` port for the rotary carrier. Themanner of revolving the rotary carrier may be done in any suitablemanner; and the means here provided is an electric motor 16 (indicatedby broken lines) and fastened to the bottom of the base plate 1,directly in line with the rotary carrier and connected thereto by meansof a common shaft clutch 17. As indicated by arrow in Fig. 3 the motionof the rotary carrier is anti-clockwise. On the upper part of shaft 11and directly beneath the hollow cylinder 13 is an enlarged cylindricalportion, which has been turned eccentrically to its own rotating' axis.Upon this eccentric 18 is mounted an armed sleeve 19, resting upon a`washer 31, and held in position by a. nut 32. The nut 32 rests againsta washer 33, and supports the rotary carrier on the bearing 12. Thearmed sleeve 19 is mounted to turn freely on the. eccentric 18. lts arm2O is provided with an abutment 21, and a hook 22. (Figs. l andV Uponthe upper face of the sleeve proper of the armed sleeve 19 is a face cam25, and upon the side of this same sleeve is a side cam 35, (this lattercam will be referred to hereinafter). Resting against the face'cam 25 isa roller 28, pivoted in an upwardly extending plunger 29, that is fittedto slide up and down through the hollow cylinder 13 and the cover 14.The upper end of the plunger 29 is provided with a. cap 30, made toembrace and slide up and down over the tubular projection 15. A roller90, inountedon an arm 91, `which will be refeiredto hereafter, keepstlie plunger 29 continually bearing against the cam face 25, and,because of the particular shape of this cam face, (Fig. 6) compels theplunger to come to a normal state of rest inits lowest position, and atthe saine time compels the armed sleeve to always assume a state ofnormal rest in a delinite position on the rotary carrier. This positionis indicated in Figs. 2, 5 yand 6. If

however the armed sleeve should be arrested by some extraneous force,the continuous mot-ion of the rotary carrier would compel the roller 28to travel over the face cam 25, and cause an up and down motion of theplunger 29. The means employed tor controlling this action of the armedsleeve, and which may be widely varied in construction, will now beexplained.

rfhe pawl case may be constructed in anyn suitable manner; as shown inmy preterrcd Y construction I employ a circular casing 40, (Figs. 2 and3) fastened to :the underside of the plate 4. The center portion ofcasing 40, as .has lalready been explained, acts uas tlie Ilower'bearing for lthe rotary carrier. In the upper `part of the casing 40are a series of radial slots, inwhich are lmounted a correspondingnumber of stop pawls 41, while on the outer circumference orf the pawlcase, directly below and in line with the radial slots, are a 'similar:number of longitudinal slots, yin `which are `mounted the impulsepa-wls T54. upon studs lOl-mounted on top of base plate l-havetheiriront end provided with keys 102, while the lrear end of each restsagainst the underside of a respective impulse pawl.

The stop pawls 4l have a sliding motion crosswise to Cthe axis of theorbital motion of the hook 22 of the armedA sleeve 19, for the purposeoff larresting the same ina manner to be explained hereafter;normallythese pawls are maintained at rest outside the orbit of hook 22.just referred to, these'stop paw'ls 4l have also a rocking motion aboutthe center 42, so as to perm-it their rear end, which projects downwardand is provided'with -a nose 44, to Vrestagainst an angular shaped ring43, which has been cut in `sections so as to be fastened lon a'shoulolerformed `upon the pawl case 40, directly above the impulse paw'ls 51.A-spring 45 is provided for each stop pa-wl, and performs two functions,as it not only tends to dra-w the pawl inward ytowards the main anis,but also to keep the nose 44 down against the ring 43so as .to begripped by the outei` edge of ring 43, thereby vkeeping the pawls lintheir outward normal position of rest. j

The impulse pawls 5l are made .to slide up and down in their respectiveslots and have also a rocking motion about the center 52. A springactuated plunger 453, bearing against the lower projection 54, keeps the`pawls in their normal downward position resting upon their respectivekeylevers 100,`

and at the Sametime, because ot their freedomto rock, lkeeps 'the upperportion 55 resting against the outer suriaceot the ring 43. The normalposition of lboththe'stop pawls and the impulse. pawls are. shown Aseries of key levers .100, pivoted I-n addition to the'sliding motionmal positions, I rater to Fig. 5, which is the plan view correspondingto the position of the parts in Fig. 2, and shows the armed sleeve 19 inits normal position, but just ready to be arrested by the released stoppawl just referred to. In this view it will be seen that the center ofthe rotary carrier or the center of the continuous rotation is shown bythe crossing of the d-iagonals -m Aand @-2, while the center of theeccentric lS is shown by the crossing of thediagonals fr-w and .tf- 37,so that relative t the center of rotation the center of eccentricity isdirectly opposite (on the diagonal m-m) to that of the position of thehook 22 of the armed sleeve mounted on this eccentric. It iollows that'the diameter of the orbit described by hook 22 must always be smallestwhen the armed sleeve is maintainedl in its normal position on therotary carrier. But as soon as the hook 22 is gripped by the releasedstop pawl, and the rotation ot the armed sleeve arrested, a radialmotion is given -to the armed sleeve, produced by the revolvingeccentric, which now causes the abutment 21 on thearm 2O to push againstthe stop pawl Athat is arresting the arm, so that bythe time theeccentric has made halt' 'a revolution, as shown in Figs. 3 and 4, thisstop pawlhas been pushed back far enough to permit its rear nose 44 tobe gripped againA by the edge of the ring 43, and cause I it to berestored to its inactive position. In Fig. 3 it will further be seen,that even if the linger should still be pushing the keylever down'andthereby holding the impulse pawl up,-because of the rocking motion ofthe impulse pawl, already referred to--the stop pawl is able `to push-the impulse `pawl backnso as to enable the spring 45 to pull the nose44 down over 1the edge of the ring 43, and restore the stop pawl to itsnormal inactive position. It will also be understood that by the timethe eccentric has completed one whole revolution from the time the armedsleeve was arrested, the hook 22 has been completely rreleased from thereset and now inactive stop pawl, and is therefore free to resume itsnormal positionon the rotary carrier, andy revolve alongY with it. Notuntil the impulse "pawl has been once ,more permitted to resume itsnormal position on the rear (or left) side of theunder the reset stoppawl, by the complete removal of the finger' from its corresponding key,can this same stop pawl be made active again, so that irrespective ofthe manner in which the keys are touched, each depression of a keyarrests the armed sleeve 19 for only one complete revolution of therotary carriel1 at a time.

The typewheel is provided with a number of characters on itscircumference corresponding to the number of stop pawls in the pawlcase. It may be provided with any suitable number of rows of charactersas well, in the drawings are shown only two such rows. The typewheel isfastened to a flange 6l, which forms part 'of the typewheel shaft 62,concentrically mounted on the rotary carrier. The manner of mountingthis typewheel shaft may be widely varied; as shown its upper end issupported in a bearing 64, which forms part. of a bracket 66, fastenedto the top plate 6. The typewheel shaft 62 extends down through thetubular projection l5, and its lowest end 67 is pivoted in the bottom ofthe hollow cylinder 13, Di-

rectly above the pivot G7 a segmental gear 68 is fastened tothetypewheel shaft and above this gear is spiral spring 69. This springbears against the bottom of the cover lt, and keeps the typewheel shaftin its downward position 'but free to move endwise as well as to swingon its bearings.

The typewheel control may be widely varied in construction; as shown itconsists of a control shaft 72, mounted in the rotary carrier parallelwith the typewheel shaft 62. To the control shaft is secured a segmentalgear 73, which meshes with the teeth of the segmental gear 68. (Figs. 2,8 and 8). The teeth of gear 73 are made wider, so as to permit thesegmental gear 68 to remain in mesh with gear 73 whenever the typewheelshaft moves endwise. The shaft 72 extends down through a bearing in thehollow cylinder 13, and is there provided with an arm 74, upon the freeend of which is a roller 75. The upper end of shaft 72 is supported inthe cover 14, and on the shaft between the gear and the cover is aspiral tortional spring 7G, which keeps the segmental gear 73 normallyresting against a pin 77, (Fig. 8) situated so as to permit the roller75 to rest close to the circular portion of the armed sleeve 19. lt willthus be seen that the spring 76 through the segmental gears keeps thetypewheel shaft and the typewheel normally at rest in a definiteposition on the rotary carrier; but permits the typewheel to be moved orrather oscillated on the rotary carrier by any intermittent motionapplied to the arm Til. As soon as the armed sleeve is arrested by oneof theV stop pawls, (as already explained) the continuous motion of therotary carrier will move the control-shaft 72 with its arm 74 and roller75 around the sleeve, until the roller reaches the side cam 35,(previously referred to and shown in Fig. l) when the roller and armwill be forced to swing outward, and through its connections with thetypewheel shaft force the typewheel to revolve on the rotary carrier.(Figs. 3 and l show the control motion in action.) When the rollerreaches the apex of the cam 35, the sping 7G will compel the rollerV tofollow the descending incline of the cam, and permit the entire controlmechanism to return to its normal position of rest until a new impulseis given. As may be seen the motion given to the typewheel by the risingportion of the cam 35 is one opposite to the motion of theI rotarycarrier, it follows that if the shape of this cam-rise is proportionedaccordingly, a motion ma be given to the typewheel, t-he speed of w iichwill be equal to that of the rotary carrier itself, and being bothopposite and equal to the speed of the rotary carrier must cause thetypewheel to stand still in relation to any fixed point on the machineitself. Furthermore in view of what has already been shown, namely thateach type on the typewheel has a corresponding set of stop pawls,impulse pawls and keys, it is possible by selection to make anyparticular type on the typewheel stand momentarily still opposite agiven fixed point.

lt should therefore be understood that the mechanical movement disclosedby this invention is one based upon the fact that it is possible tosubject a body to two independent motions of similar nature and actingin opposite directions at the same time, and further that when these twoopposite motions are exactly equal, and as here shown applied to arotated typewheel, this wheel will be made to stand still upon its ownaxis while actually in a state of ro-V tation.

It should also be explained that in case it is found desirable to makethe typewheel contact a movable platen,-as might be necessary, if forinstance the paper is actually being fed forward during the printingaction-the typewheel would merely have to be momentarily retarded in itsmotion, and hence subjected to two unequal motions in oppositedirections at the same time, so re` lated to each other as to make themotion of the wheel coincide properly with the moving platen at the timeof printing.

rlfhe platen may be constructed in any suitable manner; as shown it ismade in the form of a hammer 92, pivoted to the plate 6 at 93, and heldinits normal position of rest away from the typewheel by the spring 94.The upper end of the hammer is adapted to press the paper against thetypewheel. Its lower end 96 bears against a pin on the arm 97 of arockshaft 98. On

this rockshaft is another yarm 91 with Ya roller 90, alreadyv describedVas resting against the cap 30 of plunger '29. Thenever the armed sleeve19 is stopped 'by one of the stop paw'ls el, the plunger 29, which isvmounted in the continuously rotating carrier, -will be made to travelover the 'face cam 25. This cam is so Vshaped as to time correctly `withthe typewheel controlY motion, so as -to make the plunger 29 `push thehammer 92 against lthe ltypewheel while itis momentarily standin-glstillin relation to the platen. As shown `in Figs. '-3 and i the plungerreaches its vhighest -p'oint exactly at the time when thc ,risingportion .of cam 35 -is in th'egact moving the l'arm 'T4 and roller lofthe control shaft 72, which as already described causes the typew'heelto stand still in relation to the platen.`

'The typewheel shift may be constructed in any suitable manner; as shownin Figs. 1 and 2 it consists of a roller :60,monnted `on the end -of alever 81.@ This :lever is pivoted -at 82 on a 'lug cast -on the 'bracket66. Attached to the other yend of le ver 81 is a rod t83, 'connectingthis leverwijth the arm Stof a -rockshaftpivoted srt-65, betweenlugscast on the casing 5. l The other arm 86 of this rockshaft is,connected 'by rod87 to thenbell crank 88, pivoted at 89. rThe lower endof this bell crank `88 .constitutes the keylever upon which the shiftkey 99 is fastened. rBy the depression of this key the typewheel shaftmay be raised while rotating, so as to bring the Vlower row of types inline with the platen. y

The carriage `may be constructed in any suitable manner. As shown itconsists ,of two feed rollers 105 and 106. -The roller 105 is mounted inbearings 107, which are connected at the rear by a bar 108 and at the'front by a rod 109. The roller 106 is oar= ried i-n a rocking frame 110,pivoted at its lower end to the end pieces 107. A spring 111 holds theroller 106 against the roller 105. The paper is coiled up in the` paperholders 112, and is fed up through the rollers and then passed betweenVthe hammer rand the typewheel. The carriage is supported at the rear bygrooved rollers 113, mounted upon brackets 114, fastened to the top `ofplate V6. In front of the carriage a forked arm 115, forming part 'ofthe bearing 64, straddles and guides the rod 109.

The carriage action may be of any suitable construction. e On a bearing120, forming part of the bracket 66 is mounteda gear 121, meshing with arack 122, fastened to the end pieces 107. The gear 121 is provided witha spring case 123,in which is mounted a spring 124e, normally tending toforce the carriage in one direction. vUpon a rockshaft 125, mounted inthe bracket 66, isl attached the. solid pawl 126 and the yielding pawl127, constituting a common escapement.

downward extending arm128 of rockshaft 125 4contacts an `arm y129 on therockshaft 98, so that with-eachl motion of this rockshaft 98, as alreadydescribed, the carriage is permitted to advanceone step.

TWhenever it is desired to feed the carriage without` printing,v.a`space bar 130 iis provided. 'Thisspace bar is ymounted on arms 131,pivoted in lugs 139 on the front part of casing 2, A(Fig. l1.) andthrough its upward extending lever arm 132 and connecting rod 133, isconnected .with the lower lever arm 184, pivoted at 135. The :upperlever arm '136 carries a pushrodn137, which is cade to act uponv the arm13S ofthe rockshaft :125, Through these connections the carriage ymay beAfed step by stepv with each depression ofthe space bar.

As already stated, a variety .of changes nay be made in theyinstrumentalities here shown for lcarrying into effect my invention,and` l do not wish to be limited to the particular design, since thegist vof my invention rests 'in the ybroad Iideaof providing certainoriginal mechanical movements .for controlling the printing actionv inva power driven typewriter or similar device, as herein set forth.

ln regard to the soundness and lpractical utility of this invention, Vitmay be proper to state here that this application has been w itten on anexperimental machine embodying these identical mechanical :principles,and that it was written while vthe rotary carrier herein described rwas'being revolved at the rate Vof 1200 revolutions 'per minute.

Having thus fully described my invention, what l claim as ynew anduseful is: f

1. The combination of ya continuously rotating carrier, an armed sleeve-movably mounted yon rthe Aaxis Vof said carrier and normally revolvingwith said vcarrier in a del-i` nite position thereon, a stop-pawl, andmeans including a key for throwing said stop-.pawl

into the 4path ofthe arm of said armed sleeve and intermittentlyarresting the motion. of

said armed sleeve kfor only a single rotation f ata time independent ofthe -release of the key action. y

2. The combination of a continuously rotating carrier, an armed sleevemovably mounted .on the axis of and normally re volving withV saidcarrier ina definite position thereoin'a stop-pawl' normally out .ofengagement with the arm of said armed sleeve, means for pushing saidstop-pawlv into the path of said arm, and for pushing said stop-pawlvback into normal position before said carrier has completed onev rotantion from the moment of engagement between said arm and said stop-pawl.

3. The combination of a continuously rotating carrier', an armed. sleevemovably AV mounted on a cylindricpart `of said carrier eccentricallysituated with reference to the axis ot said carrier and normallyrevolving` with said carrier in a definite position thereon, astop-pawlnormally out ot engagement with the arm of said armed sleeve, ncans tor pushing said stop-pawl into the pathot said arm, and forpushing said stop-pawl back into normal position betere said carrier hascompleted one rotation from the moment ot engagement between said armand said stop-pawl.

t The combination of a continuously rorating carrier, a movable armedsleeve eccentrically mounted on the aXis ot said carrier and normallyrevolving with said carrier in a definite position thereon, a series otstop-pawls grouped around said `carrier and normally out of engagementwith the arm or" said armed sleeve, means for throwing any selectedstop-pawl into the path oit said arm, and means for pushing saidstop-pawl back into normal position before said carrier has completedone rotation from the moment of engagement between said arm and saidstop-pawl.

5. The combination of a printing mechanism, a continuously rotatingcarrier, a movable armed. sleeve eccentrically mounted on the axis ofsaid carrier and normally revolving with said carrier in a definiteposition thereon, a selecting device for intermittently arresting themotion ot said armed sleeve at different points of the rotation, andmechanism controlled by said armed sleeve while arrested `tor operatingsaid printing mechanism.

6. The combination ot a printing mechanism, a paper feed, a.continuously rotating carrier, an armed sleeve movably mounted on theaXis ot said carrier and normally revolving with said carrier in adetinite position thereon, a selecting device :tor intermittentlyarresting the rotary motion ot said armed sleeve at different points ofthe rotation and` for only a single rotation at a time, and mechanismcontrolled by said armed sleeve while arrested tor operating saidprinting mechanism and said paper iieed.

7. The combination ot a continuously rotating carrier, a typewheelpivoted and normally resting in a definite position on said carrier,mechanism for giving said typewheel a cylindrical reciprocatingmotion onsaid carrier at diiterent points of the rotation, and a selecting devicefor actuating said mechanism at will.

8. The combination of a continuously rotating carrier, a typewheelconcentrically pivoted and normally revolving with said carrier in adelinite position thereon, positive movable connections between saidtypewheel and said carrier, and means tor giving the typewheel anintermittent rotary movement in the direction opposite to thatot'the'carrier at different pointsof the rotation, and a selectingdevice for actuating ously rotating carrier, a typewheelnormally restingin a denite position on said carrier, mechanism mounted on said carrierfor intermittently moving said typewheel on said carrier so as tomomentarily cause any type on said typewheel to stand still opposite theplaten, and a selecting device for actuating said mechanism at will.

l0. The combination of a platen, a typewheel concentrically pivoted andnormally resting in a dei'inite position on a continuouslyrevolvingcarrier, mechanism for giv- "ig said typewheel a cylindricalreciprocating motion on said carrier at different points ot therotation, mechanism for simultaneously producing contact between saidtypewheel and said platen, and a selecting device tor actuating .saidmechanisms" at will.

11. The combination of a platen, a typewheel having a multiple series`oli-characters and resting in a definite position on a continuouslyrotating carrier, means for bringing' any desired series of charactersin line with said platen, self-restoring 4mechanism mounted on saidcarrier tor oscillating said typewheel on said driver at differentpoints of the rotation, mechanism tor simultaneously producingcontactbetween said typewhee'l and said platen, and a selecting devicefor actuating said mechanism at will. y

l2. The combination ot a typewheel and an armed sleeve bothindependently pivoted and both normally resting in delinite positions ona continuously rotating carrier, means for intermittently arresting saidarmed sleeve at ditlierent points of the rotation, and means mounted onthe carrier and controlled by said armed sleeve while arrested toroscillating said typewheel on said driver. y

13. The combination of a continuously r0- tating carrier, aconcentrically mounted 'typewheel and an eccentrically mounted armedsleeve both normally resting in definite positions on said carrier,means :tor intermittently arresting said armed sleeve `tor only a singlerotation at a time, and means controlled by said armed sleeve whilearrested for oscillating said typewheel on said driver.

14. rlhe combination ot a platen, a continuously rotating carrier, aconcentrically mounted typewheel and an eccentrically mounted armedsleeve both normally resting on said carrier, means for intermittentlyarresting said armed sleeve, and means mounted on said carrier andcontrolled by said armed sleeve while arrested for moving said typewheelon said carrier and simultaneously producing contact between saidtypewheel and said platen.,

15. The combination of a platen a type- Wlieel and an armed sleeve bothindependently pivoted and both normally resting on a continuouslyrotating carrier, means` for vintermittently arresting said armed sleeveat different points of the rotation and for only one single rotation ata time, and means controlled by said armed sleeve While arrested formoving said type- Wheel on said driver and simultaneously producgingcontact between said typewheel and said platen. s Y

16. `.The combination of ya continuously rotatedA Wheel, and means forintermittently subjecting said Wheel to an additional, in- .dependentmotion of similar nature to that of the continuous rotation but actingin op posite direction for the purpose of chang'- ing the motion of saidWheel around its own axis. Y

17. The combination of a continuously rotated Wheel, and meansV i'orintermittently subjecting-said lWheel to an additional and identicalmotion in opposite direction to that of the continuous rotation for thepurpose of arresting said Wheel on its owny axis at any desired point ofits rotation.

18. The combination of a rotating driver, a movable.` arm normallyrotating with said carrier, and a series of pawls for intermittentlyarresting the motion of said arm at different points of the rotationeach oic said pawlsv being so shaped andYmou-nted as to y be capable ofa combined sliding and rocking action controlled by a single spring Vforyeach pawvl. Y

19. The combination of a continuously rotating carrier, an armed sleeveeccentrically mounted thereon, resilient means mounted in said carrierfor normally holding said Aarmed sleeve in a definite position thereon,and means for intermittently arresting the motion of said armed sleeve.

20. The combination ot a continuously rotating carrier, an armed sleeveeccentrically mounted thereon, a. spring actuated plunger uously rotatedtypeWlieel, a key/controlled selectingdevice for intermittentlysubjecting said typeivheel to an additional motion in opposite directionto that of the continuous rotation,and means for simultaneouslyproducing contact between said t"pewheel and said platen.

23. The combination of a continuously rotated carrier, a typeivheelconcentrically mounted on said carrier, a cam-controlled shaftindependently mounted on said carrier .and operatively connected to saidtypevvhcel,

and a key-controlled selecting device for operating said shaft atdifferent points oit Vthe rotation.

24. The combination of 'a platen, a con- .tinuously rotated carrier, atypeivlieel concentrically mounted on said carrier, a camcontrolledshaft independently mounted on said carrier yand operatively connectedto said typeivheeha keyecontrolled selecting device. including a cam forintermittently operating'said shaft at different points of therotatioin'and means for simultaneously .producingcontact between saidtypewlieel and .said platen. l

Signedrbv me at Point Loma, city and .county of San Diego, State ofCalifornia,

this 1st day ot May, nineteen hundred twenty tivo. f

OLUF TYBERG.

